Cell access control method and user equipment

ABSTRACT

A cell access control method and a user terminal are provided, the method includes: obtaining, by a user equipment (UE), cell access information through a pilot channel and/or a synchronization channel; determining a current cell is a macro base station cell or an HNB cell according to the cell access information; determining, when the current cell is an HNB cell, whether the UE is allowed to access the HNB cell according to HNB information of the cell access information, if the UE is allowed to access the HNB cell, performing the access processing, if the UE is not allowed to access the HNB, abandoning the access. A UE is provided accordingly.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2008/071338, filed on Jun. 17, 2008, which claims priority toChinese Patent Application No. 200710111961.X, filed on Jun. 18, 2007,both of which are hereby incorporated by reference in their entireties.

FIELD OF THE TECHNOLOGY

The present disclosure relates to the communication field, and moreparticularly to a cell access control method and user equipment.

BACKGROUND OF THE INVENTION

In a mobile communication system, in addition to macro base stationsdeployed by operators, another kind of base stations, i.e., femtocell orHome eNodeBs (HNB), also exist, which are called access points (APs). Inthe present disclosure, they are all called HNBs. Such HNB ischaracterized in a small coverage range and flexible installment.

Due to the coexistence of macro base stations and HNBs, when an HNB anda macro base station are adjacent to or overlap each other, it isnecessary to avoid users that belong to the HNB from accessing the HNB.Accessing the HNB means that idle users are forbidden from residing inthe HNB after cell selection and active users are forbidden from handingover to the HNB, and in the meantime, the users that belong to the HNBare allowed to access the HNB.

A cell access control method in the prior art is described as follows.

An idle user equipment (UE) is required to select a cell and then residein the cell. After that, the UE determines whether the UE is allowed toaccess the HNB that provides services for the cell by reading a systembroadcast message of the cell. If the UE is allowed to access the HNB,the UE then performs cell reselection.

An active UE measures all HNBs around and adjacent to the active UEbefore handover from a macro base station to an HNB, selects measurementreports of HNBs that allow to be accessed, and reports a measurementresult, including surrounding macro base stations and HNBs that allow tobe accessed, to a source macro base station. The source macro basestation then performs a handover determination.

During implementation of the present disclosure, the inventors findthat, in the prior art, an idle UE cannot determine whether the UE isallowed to access a current HNB until the UE resides therein, and as aresult, the time of cell reselection is delayed.

Furthermore, an active UE is required to measure all HNBs around andadjacent to the UE. This results in increase of calculation amount andsystem burden.

SUMMARY OF THE INVENTION

The embodiments of the present disclosure are directed to provide a cellaccess control method and a UE, which are capable of reducing systemburden and enhancing system performance.

The cell access control method provided in the embodiments of thepresent disclosure includes: obtaining, by a UE, cell access informationthrough a pilot channel or a synchronization channel; determiningwhether the current cell is a macro base station cell or an HNB cellaccording to the cell access information.

The cell access control method provided in the embodiments of thepresent disclosure includes: obtaining, by a UE, cell access informationthrough a system broadcast message or a measurement control message;determining whether the current cell is a macro base station cell or anHNB cell according to the cell identifier in cell access information.

The UE provided in the embodiments of the present disclosure includes:an obtaining unit, adapted to obtain cell access information through apilot channel or a synchronization channel; a cell attribute determiningunit, adapted to inform an access determining unit when it is determinedthat the current cell is an HNB cell according to the cell accessinformation; an access determining unit, adapted to determine whether aUE is allowed to access the HNB cell according to the HNB information inthe cell access information, and inform the access processing unit of adetermining result; and an access processing unit, adapted to implementaccess processing when it is determined that the UE is allowed to accessthe current HNB cell, and abandoning the access when it is determinedthat the UE is not allowed to access the current HNB cell.

According to the preceding technical solutions, the embodiments of thepresent disclosure have the following advantages.

In the embodiments of the present disclosure, the cell accessinformation is obtained through a pilot channel or a synchronizationchannel. If an adjacent cell is determined as a HNB cell, beforeimplementing access processing, a UE determines whether the UE isallowed to access the HNB cell according to the cell access information;and the UE does not implement access processing if the UE is not allowedto access the HNB. Therefore, it is unnecessary to implement accessprocessing for all adjacent cells, thereby reducing system burden andenhancing system performance.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure is more understood from the detailed descriptiongiven herein below for only illustration by referring to the followingaccompanying drawings:

FIG. 1 is a flow chart of a cell access control method according toembodiments of the present disclosure;

FIG. 2 is a flow chart of a cell access control method according to afirst embodiment of the present disclosure;

FIG. 3 is a flow chart of a cell access control method according to asecond embodiment of the present disclosure;

FIG. 4 is a schematic view of a UE according to an embodiment of thepresent disclosure;

FIG. 5 is a schematic view of another UE according to an embodiment ofthe present disclosure; and

FIG. 6 is a schematic view of still another UE according to anembodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The embodiments of the present disclosure provide a cell access controlmethod and a UE to enhance system performance.

With reference to FIG. 1, the overall process of the cell access controlmethod in the embodiments of the present disclosure includes thefollowing steps.

In step 101, cell access information is obtained.

The UE obtains the cell access information. The cell access informationmay be obtained through various manners, which is described in detail inthe following embodiments.

In step 102, an attribute of a current cell is determined. If thecurrent cell is a macro base station cell, step 103 is performed, and ifthe current cell is an HNB cell, step 104 is performed.

The UE determines the attribute of the current cell according to thecell access information. The specific method of determination isdescribed in detail in the following embodiments.

In step 103, access is performed according to a preset rule.

If the current cell is a macro base station cell, an attempt to accessis made according to the preset accessing rule. The specific rule andaccessing method are of the prior art and are not defined here.

In step 104, it is determined that whether the UE is allowed to accessthe current cell. If the UE is allowed to access the current cell, step105 is performed, and if the UE is not allowed to access the currentcell, step 106 is performed.

If the current cell is an HNB cell, it is judged whether the UE isallowed to access the cell according to HNB information in the cellaccess information, and the specific method of determination isdescribed in detail in the following embodiments.

In step 105, an access processing is implemented.

The specific access processing method is classified into the followingtwo situations according to the state of the UE.

If the UE is ACTIVE, the cell is measured, and a measurement result isreported to a source base station. The specific measurement andreporting process are of the prior art and are not repeated herein.

If the UE is IDLE, the UE resides in the cell. The residing process isalso of the prior art and is not be repeated herein.

In step 106, the access process is abandoned.

If the UE determines that it is not allowed to access the current HNBcell, the UE abandons accessing the cell, i.e., the UE does not measureor reside in the cell any longer.

In this embodiment, the UE determines whether the UE is allowed toaccess the HNB cell before implementing the access processing, andabandons the access if the UE is not allowed. Therefore, it does notneed to implement the access processing for all adjacent cells, therebyreducing system burden and enhancing system performance.

In specific, in the embodiment of the present disclosure, the cellaccess information is obtained. If the adjacent cell is an HNB cell, anIDLE UE determines whether the UE is allowed to access the HNB cellaccording to the cell access information before accessing the cell andreading the system broadcast message of the cell, and abandons theaccess if the UE is not allowed. An ACTIVE UE determines whether theadjacent cell is an HNB cell to which the ACTIVE UE is allowed to accessbefore measuring a signal of the adjacent cell, and does not perform themeasurement if the ACTIVE UE is not allowed to access the adjacent HNBcell.

According to the method of obtaining the cell access information, thecell access control method in the embodiment of the present disclosureis classified into two types.

In the first type, the cell access information is obtained through apilot channel and/or a synchronization channel.

Referring to FIG. 2, a cell access control method according to a firstembodiment of the present disclosure is shown, which includes thefollowing steps.

In step 201, the cell access information is obtained through a pilotchannel and/or a synchronization channel.

In this embodiment, the specific method of obtaining the cell accessinformation is classified into the following situations according toapplication scenarios.

In the first situation, the UE initiates cell selection.

The UE searches a cell, and reads the synchronization channel and/orpilot channel of the searched cell, thereby obtaining the cell accessinformation of the cell.

In the second situation, the UE performs cell reselection.

The UE reads a synchronization channel and/or pilot channel of a celladjacent to a serving cell, and obtains the cell access information ofthe adjacent cell through the synchronization channel and/or pilotchannel.

In order to read the synchronization channel of the adjacent cell, theUE may need two receivers.

In the third situation, the UE performs handover.

The UE reads a synchronization channel and/or pilot channel of a celladjacent to a serving cell, and obtains the cell access information ofthe adjacent cell through the synchronization channel and/or pilotchannel.

In step 202, the attribute of the current cell is determined, if it isthe macro base station cell, step 203 is performed, and if it is an HNB,step 204 is performed.

The specific method of determination is classified into the followingtwo situations.

In the first situation, determination is performed according toidentifier.

The UE determines the attribute of the current cell according to thecurrent cell identifier in the cell access information;

The UE obtains the cell access information from the pilot channel and/orsynchronization channel. In this embodiment, the cell access informationmay consist of two parts, namely, cell ownership identifier and cellsymbol information. The cell ownership identifier is used to specifywhether the current cell is a macro base station cell or an HNB, and theidentifier occupies only one or several bits. The one or several bitsmay be selected from 9 bits of the cell identifier information (CELL ID)of the current cell, or may be reassigned. For example, one bit isillustrated as follows, but it should be understood that, several bitsare also allowable.

For example, it is assumed that the cell ownership information of themacro base station cell is 0, the cell ownership information of the HNBcell is 1, and three cells X, Y, and Z are provided, which are initiallymarked as 000000001, 000000002, and 000000003. The cell Y is an HNBcell, and the cells X and Z are macro base station cells. Then, afterone bit is selected from the CELL ID as the identifier, the cells X andZ are marked as 000000001 and 000000003, and the Y cell is marked as100000002. Alternatively, after a data bit is reassigned as a mark, thecells X and Z are respectively marked as 0000000001 and 0000000003, andthe Y cell is marked as 1000000002.

In the second situation, the determination is performed according to thepilot channel frequency.

When the UE obtains the cell access information from the pilot channel,since the HNB cell and the macro base station cell use differentfrequency ranges, the pilot channel frequencies received from differenttypes of cells by the UE are in different frequency ranges, and whetherthe current cell is a macro base station cell or an HNB may bedetermined according to the frequency range to which the frequency ofthe pilot channel belongs.

It may be understood that, when the attribute of the current cell isdetermined according to the frequency of the pilot channel, theownership identifier, i.e., the macro base station/HNB propertyidentifier, is unnecessary.

In step 203, the UE accesses according to a preset rule.

If the current cell is a macro base station cell, the UE attempts toaccess according to the preset accessing rule. The specific rule andaccessing method are prior art and are not defined here.

In step 204, the HNB information in the cell access information isobtained.

If the current cell is an HNB, the HNB information is obtained from thecell access information.

In step 205, it is determined whether the HNB information locally storedin the UE corresponds to or is consistent with the read current HNBinformation. If the HNB information locally stored in the UE correspondsto or is consistent with the read current HNB information, step 207 isperformed, and if the HNB information locally stored in the UE does notcorrespond to or is not consistent with the read current HNBinformation, step 206 is performed.

The UE may obtain subscription information through registration, othernon access stratum (NAS) message, or a subscriber identification module(SIM) card, and stores in the UE locally the information of the HNB thatallows to be accessed in the subscription information.

Alternatively, the information of the HNB that allows to be accessed isinput to the UE through an input device, thereby storing a list of HNBsthat allow to be accessed (including one or more HNBs) in the UElocally. The information of the HNB may be information without HNB CELLID, or information with HNB CELL ID, or the CELL ID of the HNB may alsodirectly server as the HNB information.

In step 206, the UE abandons accessing.

The UE abandons accessing the cell if the UE determines that the UE isnot allowed to access the current HNB cell, that is, does not measure orreside in the cell.

In step 207, the access processing is implemented according to the stateof the UE.

In step 208, if the UE is ACTIVE, the cell is measured, and themeasurement result is reported to the HNB of the cell. The specificmeasurement and the reporting process are of the prior art and are notrepeated herein.

In step 209, if the UE is IDLE, the UE resides in the cell, and such aprocess is also of the prior art and is not repeated herein.

The preceding embodiments describe the solution of obtaining the cellaccess information through the pilot channel and/or synchronizationchannel. Another solution of obtaining the cell access information willbe introduced as follows.

In this solution, the cell access information is obtained through asystem broadcast message or a measurement control message.

Referring to FIG. 3, a cell access control method according to a secondembodiment of the present disclosure is shown, which includes thefollowing steps.

In step 301, the cell access information is obtained through a systembroadcast message or measurement control message.

The UE obtains the cell access information through the system broadcastmessage or the measurement control message.

The specific method of generating the cell access information will beintroduced later.

Furthermore, the specific method of obtaining the cell accessinformation in this embodiment is classified into the followingsituations according to application scenes.

In the first situation, the UE performs cell reselection.

The UE reads a system broadcast message inside a serving cell, andobtains cell access information of a cell adjacent to the serving cell.

In the second situation, the UE performs handover.

The UE reads a system broadcast message or a measurement control messagein a serving cell, and obtains cell access information of a celladjacent to the serving cell.

In step 302, the attribute of the current adjacent cell is determined,if the current adjacent cell is the macro base station cell, step 303 isperformed, and if the current adjacent cell is the HNB cell, step 304 isperformed.

The UE determined the attribute of the current adjacent cell accordingto the current adjacent cell ownership identifier in the cell accessinformation.

In step 303, the UE accesses according to a preset rule.

If the current adjacent cell is a macro base station cell, the UEattempts to access according to the preset accessing rule. The specificrule and accessing method are prior art and are not defined here.

In step 304, the HNB information in the cell access information isobtained.

If the current adjacent cell is HNB, the HNB information is obtainedfrom the cell access information.

In step 305, it is determined that whether the HNB information locallystored in the UE corresponds to or is consistent with the read currentHNB information. If the HNB information locally stored in the UEcorresponds to or is consistent with the read current HNB information,step 307 is performed, and if the HNB information locally stored in theUE does not correspond to or is not consistent with the read current HNBinformation, step 306 is performed.

The UE may obtain the subscription information by registration, otherNAS message, or an SIM card, and stores in the UE locally theinformation of the HNB that allows to be accessed in the subscriptioninformation.

Alternatively, the HNB information which can be accessed is input to theUE through an input device, thereby storing an HNB list (including oneor more HNBs) which can be accessed in the UE locally. Herein, the HNBinformation may be information without HNB CELL ID, or information withHNB CELL ID, or the CELL ID of the HNB may also directly server as theHNB information.

In step 306, the UE abandons the access processing.

The UE abandons accessing the cell if the UE determines that the UE isnot allowed to access the current HNB cell, that is, does not measure orreside in the cell.

In step 307, the access processing is implemented according to the stateof the UE.

In step 308, if the UE is ACTIVE, the cell is measured, and themeasurement result is reported to the HNB of the cell. The specificmeasurement and the reporting process are of the prior art and are notrepeated herein.

In step 309, if the UE is IDLE, the UE resides in the cell, and such aprocess is also of the prior art and is not repeated herein.

The method of obtaining the cell information in the embodiments of thepresent disclosure will be introduced in detail. It may be understoodthat, the method of obtaining the cell information in the embodiments ofthe present disclosure is not limited to be adopted in the precedingembodiments.

The CELL ID information of the macro base station evolved NodeB (eNB) isgenerated in the following process. When the eNB is powered on, anOperations Administration and Maintenance (OAM) or a self-configuredserver assigns pseudo-scramble information (which is a parameter similarto scramble) associated with the eNB cell for the eNB. Then, the eNBcalculates the pilot sequence or scramble necessary for the pilotchannel according to the pseudo-scramble information. Likewise, the CELLID of the synchronization channel is also calculated according to thisparameter, and there is a correspondence relationship.

If the preceding base station is HNB, the preceding process isperformed, and furthermore, the subsequent operation is performed.

The OAM sends the pseudo-scramble information to the Mobile ManagementEntity (MME) through some transmission nodes (not limited), or sends theCELL ID to the MME through the HNB. When the UE being allowed to accessthe HNB registers, initiates services, or updates its position, the UEmay obtain the scramble information or the HNB information of the CELLID, and then a cell reselection or handover is performed by comparingthe HNB information of the CELL ID.

Alternatively, the HNB cell information is generated in the followingprocess. When the HNB is powered on, the HNB itself generatespseudo-scramble information according to a preset rule, and calculatesthe CELL ID information of the HNB cell itself according to thepseudo-scramble information.

The preceding embodiment describes the process of cell access control inthe embodiments of the present disclosure, and the corresponding cellaccess control method may be selected according to specific applicationsituation, thereby enhancing the flexibility of the cell access controlmethod in the embodiments of the present disclosure.

In the above embodiments, the attribute of the current cell isdetermined first, and if the current cell is the HNB, then it isdetermined that whether to allow accessing. It may be understood that,the UE may determine directly according to the cell access information,i.e., determine whether the cell access information corresponds to or isconsistent with the HNB information locally stored in the UE, and if thecell access information corresponds to or is consistent with the HNBinformation, the UE implements access processing; if the cell accessinformation does not correspond to or is not consistent with the HNBinformation, the current cell is determined to be the macro base stationcell or the HNB according to the cell access information. If the currentcell is the macro base station cell, access processing is performedaccording to the preset rule and the specific accessing method is of theprior art and is not repeated herein. If the current cell is the HNB,the access processing is abandoned.

The specific steps of determining whether the current cell is the macrobase station cell or the HNB cell according to the cell accessinformation are consistent with the preceding steps in the aboveembodiments, and are not repeated again.

The UE according to an embodiment of the present disclosure isintroduced as follows.

Referring to FIG. 4, the embodiment of the UE according to the presentdisclosure includes an obtaining unit 401, a cell attribute determiningunit 402, an access control unit 403, and access determining unit 404,and an access processing unit 405.

The obtaining unit 401 is adapted to obtain the cell access informationthrough a pilot channel and/or synchronization channel.

The cell attribute determining unit 402 is adapted to determine whetherthe current cell is a macro base station cell or an HNB cell accordingto the cell access information.

The access control unit 403 is adapted to access the macro base stationcell according to a preset access rule when the current cell is a macrobase station cell.

The access determining unit 404 is adapted to determine whether the HNBcell allows to be accessed according to the cell access information.

The access processing unit 405 is adapted to perform the accessprocessing when the current HNB cell allows to be accessed.

The access processing unit 405 includes a measurement module 4051 and/ora residence request module 4052.

The measurement module 4051 is adapted to measure the HNB cell when theUE is active, and report the measurement result to the HNB.

The residence request module 4052 is adapted to send a residence requestto the HNB when the UE is idle.

Referring to FIG. 5, a UE is further provided according to an embodimentof the present disclosure, which includes an obtaining unit 501, a cellattribute determining unit 502, an access determining unit 504, and anaccess processing unit 505.

The obtaining unit 501 is adapted to obtain the cell access information.

The cell attribute determining unit 502 is adapted to inform the accessdetermining unit 504 when the current cell is determined as the HNB cellaccording to the cell access information.

The access determining unit 504 is adapted to determine whether the UEis allowed to access the HNB cell according to the HNB information ofthe cell access information, and inform the access processing unit 505of the determining result.

The access processing unit 505 is adapted to perform the accessprocessing when it is determined that the current HNB cell allows to beaccessed; and abandon the access when it is determined that the currentHNB cell allows to be accessed.

The access processing unit 505 includes a measurement module 5051 and/ora residence request module 5052.

The measurement module 5051 is adapted to measure the HNB cell when theUE is active, and report the measurement result to the HNB.

The residence request module 5052 is adapted to initiate a residencerequest to the HNB when the UE is idle.

The UE in FIG. 5 further includes an access control unit 503.

The cell attribute determining unit 502 is further adapted to inform theaccess control unit 503 when the current cell is determined as the macrobase station cell according to the cell access information;

The access control unit 503 is adapted to access the current macro basestation cell according to the preset accessing rule.

Referring to FIG. 6, a UE is further provided according to an embodimentof the present disclosure, which includes an obtaining unit 601, anaccess determining unit 604, and an access processing unit 605.

The obtaining unit 601 is adapted to obtain the cell access information.

The access determining unit 604 is adapted to inform the accessprocessing unit 605 when it is determined that the cell accessinformation corresponds to or is consistent with the HNB informationlocally stored in the UE.

The access processing unit 605 is adapted to perform the accessprocessing.

The UE in FIG. 6 further includes a cell attribute determining unit 602and an access control unit 603.

The access determining unit 604 is further adapted to inform the cellattribute determining unit 602 when it is judged that the cell accessinformation is not corresponding to or consistent with the HNBinformation locally stored in the UE.

The cell attribute determining unit 602 is adapted to determine whetherthe current cell is a macro base station cell or an HNB cell accordingto the cell access information, if the current cell is the HNB cell,inform the access processing unit 605 to abandon the access and if thecurrent cell is the macro base station cell, inform the access controlunit 603.

The access control unit 603 is adapted to access the current macro basestation cell according to the preset accessing rule when accessing thecurrent macro base station cell.

The access processing unit 605 includes a measurement module 6051 and/ora residence request module 6052.

The measurement module 6051 is adapted to measure the HNB cell when theUE is active, and report the measurement result to the HNB.

The residence request module 6052 is adapted to send a residence requestto the HNB when the UE is idle.

Those of ordinary skill in the art may understand that, all or a part ofsteps in the methods in the preceding embodiments may be implemented byinstructing relevant hardware using a program, and the program may bestored in a computer readable storage medium. The program in executionincludes the following steps. The UE obtains cell access informationthrough a pilot channel and/or a synchronization channel, i.e., CELL IDand/or frequency range; determines whether the current cell is a macrobase station cell or an HNB cell according to the cell accessinformation; if the current cell is an HNB cell, determines whether itis allowed to access the HNB cell according to the HNB information ofthe cell access information, and if it is allowed, the UE performs theaccess processing; otherwise, the UE abandons the accessing.

The preceding storage medium may be a read-only memory, a magnetic disc,or an optical disc.

It should be noted that, the cell information and the cell accessinformation in the specification mean the same, and the cell accessinformation may include CELL ID and/or frequency ranges.

The cell access control method and the UE provided in the presentdisclosure are introduced in detail as above. Those of ordinary skill inthe art may change the specific implementation and application rangesaccording to the concept in the embodiments of the present disclosure.In view of the above, the contents of the specification cannot beinterpreted to limit the present invention.

1. A cell access control method, comprising: obtaining, by a userequipment (UE), cell access information through a pilot channel or asynchronization channel; determining whether a current cell is a macrobase station cell or a home eNodeB (HNB) cell according to the cellaccess information.
 2. The method of claim 1, wherein the cell accessinformation comprises: frequency information obtained from the pilotchannel or cell identifier information obtained from the synchronizationchannel.
 3. The method of claim 1, further comprising: determining, ifthe current cell is an HNB cell, whether the UE is allowed to access theHNB cell according to the cell access information; and performing theaccess processing if the UE is allowed to access the HNB cell.
 4. Themethod of claim 3, wherein the determining whether the UE is allowed toaccess the HNB cell according to the cell access information comprises:determining, by the UE, whether HNB information stored in the UEcorresponds to or is consistent with the cell access information;determining to be allowed to access the HNB cell if the HNB informationstored in the UE corresponds to or is consistent with the cell accessinformation.
 5. The method of claim 4, before determining by the UEwhether the HNB information stored in the UE corresponds to or isconsistent with the cell access information, further comprising:obtaining, by the UE, subscription information through non accessstratum (NAS) message or a subscriber identification module (SIM) card;reading information of the HNB that allows to be accessed from theobtained subscription information; and storing the read information ofthe HNB that allows to be accessed in the UE; or inputting theinformation of the HNB that allows to be accessed to the UE through aninput device; and storing the information of the HNB that allows to beaccessed in the UE.
 6. The method of claim 3, further comprising:abandoning the access processing if the UE is not allowed to access theHNB cell.
 7. The method of claim 1, further comprising: performing theaccess processing according to a preset rule if the current cell is amacro base station cell.
 8. A cell access control method, comprising:obtaining, by a user equipment (UE), cell access information through asystem broadcast message or measurement control message; determiningwhether a current cell is a macro base station cell or a home eNodeB(HNB) cell according to a cell ownership identifier of the cell accessinformation.
 9. The method of claim 8, further comprising: determining,if the current cell is an HNB cell, whether the UE is allowed to accessthe HNB cell according to the cell access information; and performingthe access processing if the UE is allowed to access the HNB cell. 10.The method of claim 9, further comprising: abandoning the accessprocessing if the UE is not allowed to access the HNB cell.
 11. Themethod of claim 1, further comprising: performing the access processingaccording to a preset rule if the current cell is a macro base stationcell.
 12. The method of claim 9, wherein the determining whether the UEis allowed to access the HNB cell according to the cell accessinformation comprises: determining, by the UE, whether HNB informationstored in the UE corresponds to or is consistent with the cell accessinformation; determining to be allowed to access the HNB cell if the HNBinformation stored in the UE corresponds to or is consistent with thecell access information.
 13. The method of claim 12, before determiningby the UE whether the HNB information stored in the UE corresponds to oris consistent with the cell access information, further comprising:obtaining, by the UE, subscription information through non accessstratum (NAS) message or a subscriber identification module (SIM) card;reading information of the HNB that allows to be accessed from theobtained subscription information; and storing the read information ofthe HNB that allows to be accessed in the UE; or inputting theinformation of the HNB that allows to be accessed to the UE through aninput device; and storing the information of the HNB that allows to beaccessed in the UE.
 14. A user equipment (UE), comprising: an obtainingunit adapted to obtain cell access information through a pilot channelor a synchronization channel; a cell attribute determining unit adaptedto inform an access determining unit when current cell is determined asa home eNodeB (HNB) cell according to the cell access information; theaccess determining unit adapted to determine whether the UE is allowedto access the HNB cell according to HNB information of the cell accessinformation, and inform an access processing unit of the determinationresult; and the access processing unit adapted to perform the accessprocessing when it is determined that the current HNB cell allows to beaccessed; and abandon the access when it is determined that the currentHNB cell does not allow to be accessed.
 15. The user equipment of claim14, wherein the access processing unit comprises a measurement moduleand/or a residence request module; wherein the measurement module isadapted to measure the HNB cell when the UE is active, and report themeasurement result to the HNB; and wherein the residence request moduleis adapted to send a residence request to the HNB when the UE is idle.16. The user equipment of claim 14, wherein the UE further comprises anaccess control unit; wherein the cell attribute determining unit isfurther adapted to inform the access control unit when the current cellis determined as a macro base station cell according to the cell accessinformation; and wherein the access control unit is adapted to accessthe current macro base station cell according to a preset accessingrule.